US5542962A - Treating biomass material - Google Patents

Treating biomass material Download PDF

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Publication number
US5542962A
US5542962A US08/157,095 US15709594A US5542962A US 5542962 A US5542962 A US 5542962A US 15709594 A US15709594 A US 15709594A US 5542962 A US5542962 A US 5542962A
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Prior art keywords
biomass
temperature
straw
treatment temperature
heating
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US08/157,095
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Robert C. A. W. Ollerenshaw
Maurice A. Roe
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Fi Pro Ltd
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Fi Pro Ltd
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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L9/00—Treating solid fuels to improve their combustion
    • C10L9/08—Treating solid fuels to improve their combustion by heat treatments, e.g. calcining
    • C10L9/083—Torrefaction
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
    • C10B53/02—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of cellulose-containing material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L5/00—Solid fuels
    • C10L5/40—Solid fuels essentially based on materials of non-mineral origin
    • C10L5/44—Solid fuels essentially based on materials of non-mineral origin on vegetable substances
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/10—Biofuels, e.g. bio-diesel
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel

Definitions

  • This invention relates to a method of treating biomass material by which we mean particularly, but not exclusively, vegetable matter such as bracken or straw.
  • straw we mean the remnant created during the harvesting of crops such as barley, wheat or other grains, oil seed rape etc. for examples, or other agricultural waste such as is created during the harvesting of beans (haulm), brassicas etc.
  • the method is however applicable to the treatment of any other biomass material, such as sewage sludge, and other organic waste.
  • a method of treating biomass material comprising heating the biomass material without wetting, and substantially at ambient pressure, to a treatment temperature of at least 200° for a treatment time sufficient for the material to undergo partial pyrolysis only.
  • a treatment system for treating biomass material by a method according to the first aspect of the invention, the system comprising means to heat the biomass material without wetting, and substantially at ambient pressure to a temperature of at least 200° C. for a treatment time sufficient for the material to undergo partial pyrolysis only.
  • FIG. 1 is a block diagram showing the treatment steps in a biomass treatment system, which is operated in accordance with the invention
  • FIGS. 2 and 2a are side and sectional illustrative views of a drying apparatus, being a part of a first embodiment of a biomass treatment system which is operated in accordance with the invention
  • FIG. 3 and 3a are side and sectional illustrative views of a heat treatment apparatus being a further part of the first embodiment of biomass treatment system for use in the system of FIG. 1,
  • FIGS. 4 and 4a are side find sectional illustrative views of a washing apparatus being a yet further part of the first embodiment of biomass treatment system
  • FIG. 5 is a side illustrative sectional view of a combined drying, and heat treatment being a part of a second embodiment of a biomass treatment system which is operated in accordance with the invention
  • FIG. 6 is an end illustrative view of the apparatus of FIG. 5, and
  • FIG. 7 is a side illustrative sectional view of a washing apparatus being a further pan of the second embodiment of biomass treatment system.
  • the oil seed rape straw was harvested and baled and left on the field to dry out partially, naturally.
  • the baled straw was then collected and fed into a milling machine which crushed and cut the straw into smaller fragments having a size such that most of the fragments produced would pass through a mesh of sieve size 5 mm.
  • the straw was milled in a conventional milling machine such as is sold by Cormall, the machine actually used being a type HD84D.
  • a conventional milling machine such as is sold by Cormall, the machine actually used being a type HD84D.
  • any other suitable type of milling machine which can mechanically act upon the straw to cut and crush the straw could alternatively be used to mill the straw.
  • the milled straw was force dried and at least partially sterilised at a temperature of 100° C. or less so as to drive off moisture but not to affect the chemical composition of the straw.
  • the straw was force dried in an apparatus such as is illustrated at 10 in FIGS. 2 and 2a, the apparatus comprising an outer casing 11 and an inner screw conveyor or auger 12.
  • the auger 12 is rotatable in the outer casing 11 by any desired means such as a dedicated electric motor, an internal combustion engine, or even by the power take-off of a tractor.
  • Straw is fed into a hopper 13 and moved along the outer casing 11 in the direction of arrow A by a helical fin or rib which is labelled at 14, the fin or rib 14 each extending outwardly from a centre part 15 of the auger 12 in a helical configuration.
  • the auger 12 as well as moving the straw along the apparatus 10, agitates the straw so that the straw comes into contact with the inside surface of the casing 11 which is heated.
  • Heating of the casing 11 may be achieved by any desired means such as for example electrical elements, hot air, or even burners.
  • hot air or combustion gas may be fed into the casing 11.
  • the outer casing 11 illustrated includes a perforated upper wall part 16 to allow steam and water vapour produced during drying to be vented from the casing 11.
  • Such an apparatus 10 may be of any desired length and the temperature to which the straw may be heated therein, may be chosen as desired to achieve a desired degree of heating and drying but preferably without thermochemically changing the constitution of the straw.
  • the straw was dried until it had a moisture content of 5% or less.
  • the casing 11 could be internally pressurised so that the milled straw is dried by heating to above 100° C. Further, any steam given off can be recycled to preheat the straw prior to drying, if desired.
  • the material was heat treated. It was found to be essential to heat the material sufficiently to cause the thermo-chemical production of some carbon, and caramel (from sugars in the straw) by partial pyrolysis so as to achieve a physical change, and a colour change at the outer surface of the material.
  • the heat treatment was performed in an apparatus 20 similar to that shown at FIGS. 2 and 2a.
  • an outer casing 21 thereof was also rotated, but in an opposite direction to the auger 22.
  • Rotation of the outer casing 21 was achieved by means of a drive wheel 26 driven from a suitable motive source, which frictionally contacted a rubber tyre 27 which was secured to the outer surface of the casing 21.
  • Heating was achieved by heating the casing 21 e.g. using a propane burner. Ventilation points were provided along the heat treatment apparatus 20 as were found to be necessary to permit smoke produced during partial pyrolysis, to escape.
  • the straw material was agitated by the action of the auger 22, as it was conveyed along the apparatus 20 by a helical fin or rib 24.
  • Tube 21 is rotated not only to assist agitation of the material being heated, but also to prevent the tube 21 from distorting due to differential heating effects.
  • the final section of the heat treatment apparatus 20 (where comprising a plurality of sections), or the end region of the apparatus 20 adjacent the outlet, may have means to cool and/or dampen the treated material so that there is no risk of combustion as the material again comes into contact with the air.
  • the material was thus heat treated by heating to about 250° C. for up to 2 minutes, but preferably at least 1/2 minute. If desired, the material could be heat treated by heating to a lesser temperature, but at least 200° C., for a longer period. In each case, the treatment produced some carbon and some caramel.
  • the still hot material at its elevated temperature above ambient temperature, was washed with water. This was found to be desirable in the dry heating process described to remove some of the salts present in the straw material, and some of the residual sugar. Also, char and/or smoke odour was removed from the material by the washing process to make the end material more acceptable.
  • the material was partially redried to leave a residual moisture content of about 50-70%, but preferably at least 50%.
  • FIGS. 4 and 4a there is shown a washing apparatus 30 which also is capable of partially redrying the material after washing, as will be described.
  • the apparatus 30 comprises an outer casing 31 and an inner auger 32.
  • the auger 32 comprises a centre part 35 which is rotated by any desired motive means, a helical rib or fin formation 34 being provided on the centre pant 35.
  • the whole apparatus is inclined to the horizontal at an angle of about 30° but may be inclined at a greater angle e.g. up to 70° or even vertical.
  • cool water is fed into the casing 31 through an inlet 38, the water flowing downwardly under gravity towards an outlet 39, and as it flows, extracting heat and salt/sugars from the material in the casing 31.
  • the helical fin or rib 34 may have perforated parts 40 as shown, or parts of the fin or rib 34 may be omitted to facilitate the flow of water.
  • the outside diameter of the casing 31 reduces so that material becomes compacted and hence squeezed in the upper region 42 of the casing 31. Water which is squeezed from the material of course also flows downhill under gravity towards the outlet 39 to assist washing. Thus the material is partially redried and is pressed from the casing 31 through the outlet 41 at a collection point. The material may then be further redried if necessary, for example by placing in a warm atmosphere and/or packed and delivered to a point of delivery for use.
  • any other means for causing compaction and hence squeezing of the material prior to it leaving the casing 31, could be devised.
  • the diameter of the centre part 35 of the auger 32 may be increased in end region 42 so as to reduce the volume of space available for the material in the upper region 42 of the casing 31.
  • the helix angle of the helical rib or fin 34 may be changed in region 42 to cause compaction-of the material, or a double start helix may be provided at the end of auger 32 adjacent opening 41.
  • the material is partially redried as it leaves the washing apparatus 30.
  • Harvested and milled straw material obtained as in the first example was dryed and heat treated in an apparatus which combined drying and at least initial or pre-heating.
  • the apparatus has an outer casing 111 with a feed opening F for milled comminuted biomass material, which permits the biomass material to be fed into a space 112 towards one end 113 of the apparatus 110, above a rotating drum 114 to be described.
  • the material is fed along the space 112 towards an opposite end 115 of the apparatus 110 by the action of splines 116 on the outside wall of the rotating drum 114 (not shown in FIG. 5). Any tendency of the biomass material to gather and compact at sides 117,118, of the space 112, is offset by respective rotating augers 119,120 (which are not shown in FIG. 5) and one or more transversely extending looped chains 121 located along space 112.
  • the chain or chains 121 are driven from sprocket wheels 122,123 so that the chain or chains 121 are driven transversely of space 112.
  • the chain or chains 121 each carry a plurality of teaselers 124 thus to spread the biomass material transversely of space 112.
  • the material Adjacent opposite end 115 of the apparatus 110, the material is removed from the space 112 by an auger 125 which passes through a diaphragm seal 126 into a V-shaped chamber 127 from where the material is drawn into a heat treatment chamber 130.
  • the drum 114 has a plurality of openings 131 to permit hot air to pass from within the drum 114 into the space 112 thus to dry the material as it is conveyed along space 112.
  • the casing 111 has at least one further opening 132 through which air is extracted from space 112 by a fan 133 to assist air flow through the material.
  • the biomass material can be dried to a desired extent whilst in the space 112, for example to leave about 5% moisture in the material or less, as in example 1 previously described.
  • the heat treatment chamber 130 is arranged concentrically within the drum 114 and has within it a rotating auger 135 which collects dried material from the chamber 127 and conveys the material back towards end 113 of the apparatus 110. As the material is conveyed in chamber 130, the material is subjected to heat and is thus heat treated.
  • hot air heated by a flame at a temperature typically of 1100° C. is fed into the drum 114 at end 113 thereof through a first annular inlet 137.
  • the hot air may typically be of a temperature of about 400° C. when it enters the drum 114 and this heats outside wall 138 of the heat treatment chamber 130 to about 400°.
  • the biomass material within the chamber 130 is being continuously agitated by the auger 135, the biomass material spends only a short length of time in actual contact with the wall 138.
  • the material does not attain a temperature close to 400° C. but rather attains a temperature of about 250° C. to which it is subjected for a time depending upon the rate at which the material is conveyed along chamber 130 and any further heat treatment chambers, as hereinafter described.
  • the material is preferably heat treated such that the material only undergoes partial pyrolysis to form some carbon and caramel as it is conveyed.
  • the material however has to be heated to about 200° C. to undergo sufficient pyrolysis within a practical timeframe but more preferably is heated to about 250° C., typically for around 2 minutes but at any event, less than ten minutes and more typically, less than five minutes.
  • the heat treatment chamber 130 extends outwardly of end 113 of the apparatus 110 as far as needs be and if desired, the material may undergo changes in direction of conveying as it is heat treated so that the apparatus 110 does not become so long as to be unwieldy.
  • the material may be fed into a further heat treatment chamber transverse to chamber 130, or into a further heat treatment chamber generally parallel to chamber 130 but conveying the material in an opposite direction to chamber 130.
  • the material may be heated in the further heat treatment chamber, outside of the apparatus 110 by burners or the like playing on a rotating, outside wall of the chamber or by any other suitable heating means as desired.
  • the hot air fed into drum 114 is mixed with cooler air before passing through the openings 131 in the drum 114 into space 112. This is achieved by there being two concentric walls 139,140 within chamber 114, the walls 139,140, being secured to one another by a plurality of spiders or spokes which do not obstruct air flow 141 and thus walls 139,140, rotate with the remainder of the drum 114 about the heat treatment chamber 130.
  • the walls 139,140 thus provide a second annular inlet 142 for secondary air preferably at ambient temperature, and three annular concentric chambers 143,144 and 145.
  • the arrangement is such that primary (hot) air entering the drum 114 at about 400° C. through inlet 137, passes along chamber 143 in contact with the wall 138 of the heating chamber 130 until it reaches a space 146 at end 115 of the apparatus 110 where it is mixed with secondary air which has entered chamber 114 through inlet 142 and passed along chamber 144 to space 146.
  • the hot air and ambient air would be mixed in typically a 1:4 to 1:5 ratio, by volume, so that when the hot air and the ambient secondary air mix the temperature of the air is cooled significantly.
  • the mixed hot and secondary air then enter chamber 145 adjacent the inside of the drum wall 147, and flows along chamber 145 from where it passes through the openings 131 into the drying space 112 as previously explained.
  • the temperature of the hot air introduced into the apparatus through inlet 137 is typically at about 400° C. the hot air will rapidly cool and by the time the hot air reaches chamber 146 at end 115 of the apparatus, its temperature will be about 350° C. typically.
  • the secondary air which enters the apparatus 110 through inlet 142 will typically be at an ambient temperature of about 15° C. and will become heated slightly as it passes along chamber 144 towards end 115 of the apparatus, where it will attain a temperature typically of about 25° C.
  • the temperature of the mixed air which passes along chamber 145 and thereafter into the drying space 112, is typically about 90° C.
  • a helix formation H (not shown in FIG. 5) which serves to turbulate the air and thus increase the efficiency of heat transfer between the air and the wall 138 of the heat treatment chamber 130.
  • wall 138 of the heat treatment chamber 130 comprises part of the drum 114 and thus rotates with the drum 114, in an opposite direction to the auger 135. If desired, the wall 138 may be stationary.
  • FIG. 7 there is shown the washing apparatus 150 which was used to enable the heat treated material to be washed and partially redried.
  • the apparatus 150 comprises a tower 151 into which material is conveyed at the foot thereof, via an auger 152 in a conveying chamber 153, which may for example be at an end of a further heat treatment chamber as described above with reference to the FIGS. 5 and 6 arrangement, or the end of heat treatment chamber 130.
  • a sliding valve 154 is provided to close the inlet 155 to the tower 151 and prevent the escape of water therefrom when material is not being fed along chamber 153 by the auger 152.
  • the tower 151 is made in two sections in this example, a lower section indicated at 160, an upper section 159, which are separable for easy maintenance.
  • the tower 151 is supported as a whole on a frame structure 161.
  • Water is introduced into the tower 151 at an upper end 162 thereof and the tower 151 is kept topped up with water to a level indicated at 163.
  • Water is periodically drained from the tower 151 via a drain opening at the lower end thereof and replenished with fresh water.
  • the material migrates upwardly in the tower.
  • the lower section 160 has a smaller cross sectional area than the upper section 159. This is to ensure that the material, which may swell as it becomes wetted, does not become immobile in the tower 151 by tightly gripping the inside wall of the tower 151 as could occur if the tower were of a constant cross sectional area throughout its height.
  • the material is lifted above the water level 163 in the tower 161 by virtue of further material entering the tower 151, where it drains, and at the uppermost end 162 of the tower 151 a conveyor 164 is provided to remove the wetted material.
  • This conveyor 164 comprises in this example a chain entrained about a pair of sprockets 166,167, and carrying a plurality of teaselers 168.
  • the material is carried along a chute 169 to a position where it is discharged into a further conveyor 170 which comprises an auger 171, by which it is conveyed to a hydraulic or other press station where the heat treated and washed material is squeezed to leave a desired moisture content and to facilitate packaging.
  • washing apparatus 150 means other than the screw 157 could be provided to urge the material upwardly in the tower 151, and the conveyor 164 is only one example of a method by which the material can be removed from the upper end 162 of the tower 151.
  • the chute 169 may lead directly to a press or other means for partially redrying the material, if desired.
  • Heavy soil such as clay, can be conditioned with the material in that drainage is improved. In a light soil, the material is able to conserve moisture.
  • the material produced has significant advantages over peat in that the material produced can be dried almost to 0% moisture content, and re-wetted without spoiling its peat-like properties. Peat however, if dried out to too great an extent, disintegrates into dust and if re-wetted, merely forms a sludge.
  • the material produced by the invention can be sold in a dry condition whereas peat always has to be sold with a moisture content, by weight, of about 50%. Because the moisture retention properties of the material enable the water content to be controlled, the material can however be sold with any desired moisture content within a wide range.
  • the spent water used for washing is rich in salts such as potassium chloride, and nitrates and sugars, and thus may readily be used for the irrigation of agricultural land, to improve crop yields.
  • the material need not be washed as described, but may be used "as is” for example as a mulch. However, washing and partial redrying is preferred as this has been found to improve the resistance of the sterile end product to reinfection.
  • Any dust or fines entrained in the air passing from the dryer can be filtered out and used as a bio fuel.
  • the heat treatment is carried out substantially at ambient pressure, thus making the methods described particularly suitable for a continuous process, necessary for treating large volumes of material.

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  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Processing Of Solid Wastes (AREA)
  • Saccharide Compounds (AREA)
  • Treatment Of Sludge (AREA)
  • Jellies, Jams, And Syrups (AREA)
  • Disintegrating Or Milling (AREA)
US08/157,095 1991-06-01 1992-05-29 Treating biomass material Expired - Fee Related US5542962A (en)

Applications Claiming Priority (3)

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GB9111838 1991-06-01
GB919111838A GB9111838D0 (en) 1991-06-01 1991-06-01 Treating biomass material
PCT/GB1992/000974 WO1992021735A1 (en) 1991-06-01 1992-05-29 Treating biomass material

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US (1) US5542962A (es)
EP (1) EP0588833B1 (es)
AT (1) ATE136052T1 (es)
AU (1) AU665194B2 (es)
CA (1) CA2110282A1 (es)
DE (1) DE69209503T2 (es)
DK (1) DK0588833T3 (es)
ES (1) ES2088141T3 (es)
GB (2) GB9111838D0 (es)
GR (1) GR3020356T3 (es)
WO (1) WO1992021735A1 (es)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6423532B1 (en) * 1997-02-24 2002-07-23 Linde Brv Biowaste Technologies Ag Refuse-treatment method and apparatus
WO2002059062A2 (en) 2001-01-23 2002-08-01 Oms Investments, Inc. Compressed blends of coconut coir pith and non-coir/non-peat materials
US20030138365A1 (en) * 2001-12-19 2003-07-24 Strudes Inc. Pyrolysis system
US6711850B2 (en) 2001-11-09 2004-03-30 Oms Investments, Inc. Plant growth media and processes for production thereof and compositions for use therein
US6719956B1 (en) 2000-09-15 2004-04-13 Siddhartha Gaur Carbonaceous material products and a process for their production
US20050274074A1 (en) * 1998-09-04 2005-12-15 Stamp John W Plant and mushroom growth medium
US20060223173A1 (en) * 2005-04-01 2006-10-05 Austin Gary N Anaerobic digester for the production of methane gas from manure
US20100037729A1 (en) * 2000-09-15 2010-02-18 Siddhartha Gaur Blast furnace metallurgical coal substitute products and method
US20100071428A1 (en) * 2007-01-09 2010-03-25 Keith Waldron Method and kit
US20100077711A1 (en) * 2008-09-29 2010-04-01 Horst Weigelt Thermochemical reactor for a self-propelled harvesting vehicle
US20100181183A1 (en) * 2007-06-29 2010-07-22 Emmanouil Koukios Method for the removal of inorganic compounds of biomass from agricultural, forest and urban sources
EP2601279A1 (en) * 2010-07-29 2013-06-12 Academia Sinica Supertorrefaction of biomass into biocoal
WO2016162575A1 (fr) 2015-04-09 2016-10-13 Peters Christophe Dispositif et systeme de crevaison d'un pneu
WO2020047310A1 (en) 2018-08-30 2020-03-05 Oms Investments, Inc. Nutrient sources for plant growth mediums
WO2020106841A1 (en) 2018-11-21 2020-05-28 Oms Investments, Inc. Nutrient compositions
WO2021221759A1 (en) * 2020-04-30 2021-11-04 Colorado State University Research Foundation Biomass dehydration system

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NZ248884A (en) * 1993-10-07 1995-10-26 Convertech Group Ltd Hydrolysis and/or drying of biological material with steam
ES2086262B1 (es) * 1994-07-07 1997-03-16 Areizaga Iglesias Adolfo De Proceso de gasificacion de residuos de biomasa.
FR2775292B1 (fr) * 1998-02-20 2002-04-19 Agresta Procede et dispositif de traitement thermique de materiaux comportant des fibres ligno-cellulosiques
DE102006006701B3 (de) * 2006-02-13 2007-09-27 Axel Modrow Einrichtung und Verfahren zur Herstellung brennbarer Pellets aus Pferdemist
CA2539012C (en) 2006-03-10 2013-07-09 John Flottvik Closed retort charcoal reactor system
EP2722382A3 (en) * 2006-06-14 2014-05-07 Torr-Coal Technology B.V. Method for the preparation of solid fuels by means of torrefaction as well as the solid fuels thus obtained and the use of these fuels
NL1032226C2 (nl) * 2006-07-24 2008-01-25 Torr Coal Technology B V Werkwijze voor het verlagen van het totaal chloorgehalte van een getorreficeerde vaste brandstof, de daardoor verkregen vaste brandstof en de toepassing hiervan.
US10041015B2 (en) * 2009-09-10 2018-08-07 Emmanouil Koukios Methodology for the removal of inorganic components from biomass of agro/forest/urban origin and from low-quality coal such as peat, lignite, sub-bituminous and bituminous coals
CH706173A9 (de) * 2012-02-24 2013-10-31 Nk New Knowledge Ag Zu- und Abführvorrichtung einer Anlage zur hydrothermalen Karbonisierung.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3950143A (en) * 1972-07-14 1976-04-13 The Kingsford Company Process for producing solid industrial fuel
US4787917A (en) * 1985-05-24 1988-11-29 Clerc De Bussy Le Method for producing torrefied wood, product obtained thereby, and application to the production of energy
US5023097A (en) * 1988-04-05 1991-06-11 Xylan, Inc. Delignification of non-woody biomass

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR905433A (fr) * 1944-02-02 1945-12-04 Procédé de carbonisation des matières cellulosiques
AT379408B (de) * 1983-07-07 1986-01-10 Heid Ag Maschf Verfahren zur herstellung von bio-roestkohle und vorrichtung zu seiner durchfuehrung
GB2144836A (en) * 1983-08-03 1985-03-13 Kleenair Products Co Inc Improvements in or relating to a pyrolysis reaction and apparatus
DE3337621A1 (de) * 1983-10-15 1985-04-25 Veba Oel Entwicklungsgesellschaft mbH, 4660 Gelsenkirchen-Buer Verfahren zur synthesegaserzeugung
DE3703984A1 (de) * 1987-02-10 1988-08-18 Stuttgart Tech Werke Einrichtung zur zerstoerung von halogenierten aromaten, wie chlorierte dibenzodioxine, chlorierte dibenzofurane oder dgl., in flugaschen aus abfallverbrennungsanlagen
US4998179A (en) * 1989-02-28 1991-03-05 United Technologies Corporation Capacitive semiconductive sensor with hinged diaphragm for planar movement

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3950143A (en) * 1972-07-14 1976-04-13 The Kingsford Company Process for producing solid industrial fuel
US4787917A (en) * 1985-05-24 1988-11-29 Clerc De Bussy Le Method for producing torrefied wood, product obtained thereby, and application to the production of energy
US5023097A (en) * 1988-04-05 1991-06-11 Xylan, Inc. Delignification of non-woody biomass

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6423532B1 (en) * 1997-02-24 2002-07-23 Linde Brv Biowaste Technologies Ag Refuse-treatment method and apparatus
US20050274074A1 (en) * 1998-09-04 2005-12-15 Stamp John W Plant and mushroom growth medium
US20100037729A1 (en) * 2000-09-15 2010-02-18 Siddhartha Gaur Blast furnace metallurgical coal substitute products and method
US6719956B1 (en) 2000-09-15 2004-04-13 Siddhartha Gaur Carbonaceous material products and a process for their production
US20040197259A1 (en) * 2000-09-15 2004-10-07 Siddhartha Gaur Carbon alloy products and a process for their production
US20100001429A1 (en) * 2000-09-15 2010-01-07 Siddhartha Gaur Process for production of carbon alloy products
US8906336B2 (en) 2000-09-15 2014-12-09 Siddhartha Gaur Blast furnace metallurgical coal substitute products and method
US7897132B2 (en) 2000-09-15 2011-03-01 Siddhartha Gaur Process for production of carbon alloy products
US8110169B2 (en) 2000-09-15 2012-02-07 Siddhartha Gaur Carbon alloy products and a process for their production
WO2002059062A2 (en) 2001-01-23 2002-08-01 Oms Investments, Inc. Compressed blends of coconut coir pith and non-coir/non-peat materials
US6711850B2 (en) 2001-11-09 2004-03-30 Oms Investments, Inc. Plant growth media and processes for production thereof and compositions for use therein
US20030138365A1 (en) * 2001-12-19 2003-07-24 Strudes Inc. Pyrolysis system
US20060223173A1 (en) * 2005-04-01 2006-10-05 Austin Gary N Anaerobic digester for the production of methane gas from manure
US8361171B2 (en) * 2007-01-09 2013-01-29 Institute Of Food Research Method and kit
US20100071428A1 (en) * 2007-01-09 2010-03-25 Keith Waldron Method and kit
US20100181183A1 (en) * 2007-06-29 2010-07-22 Emmanouil Koukios Method for the removal of inorganic compounds of biomass from agricultural, forest and urban sources
US8471080B2 (en) * 2007-06-29 2013-06-25 Thesmorefinery Technologies LLC Method for the removal of inorganic compounds of biomass from agricultural, forest and urban sources
US8168044B2 (en) * 2008-09-29 2012-05-01 Claas Selbstfahrende Erntemaschinen Gmbh Thermochemical reactor for a self-propelled harvesting vehicle
US20100077711A1 (en) * 2008-09-29 2010-04-01 Horst Weigelt Thermochemical reactor for a self-propelled harvesting vehicle
EP2601279A1 (en) * 2010-07-29 2013-06-12 Academia Sinica Supertorrefaction of biomass into biocoal
EP2601279A4 (en) * 2010-07-29 2014-03-05 Academia Sinica SUPERTORREFICATION FROM BIOMASS TO BIO COAL
US9096800B2 (en) 2010-07-29 2015-08-04 Academia Sinica Supertorrefaction of biomass into biocoal
WO2016162575A1 (fr) 2015-04-09 2016-10-13 Peters Christophe Dispositif et systeme de crevaison d'un pneu
WO2020047310A1 (en) 2018-08-30 2020-03-05 Oms Investments, Inc. Nutrient sources for plant growth mediums
WO2020106841A1 (en) 2018-11-21 2020-05-28 Oms Investments, Inc. Nutrient compositions
WO2021221759A1 (en) * 2020-04-30 2021-11-04 Colorado State University Research Foundation Biomass dehydration system

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GB2271349B (en) 1995-07-12
GB2271349A (en) 1994-04-13
ATE136052T1 (de) 1996-04-15
DE69209503T2 (de) 1996-11-07
WO1992021735A1 (en) 1992-12-10
AU1776492A (en) 1993-01-08
EP0588833B1 (en) 1996-03-27
AU665194B2 (en) 1995-12-21
GB9323985D0 (en) 1994-02-16
ES2088141T3 (es) 1996-08-01
GR3020356T3 (en) 1996-09-30
EP0588833A1 (en) 1994-03-30
DE69209503D1 (de) 1996-05-02
DK0588833T3 (da) 1996-08-05
CA2110282A1 (en) 1992-12-10

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